They were inseparable until an innocent mistake tore them apart.

Growing up, Viola and Issy clung to each other in the wake of their mother's eccentricity, as she dragged them from a commune to a tiny Welsh village. They thought the three of them would be together forever.

But an innocent mistake one summer set them on drastically different paths. Now in their twenties, Issy is trying to hold together a life as a magazine art director, while Viola is slowly destroying herself, consumed with guilt over the events they unknowingly set into motion as children.

When it seems that Viola might never recover, Issy returns to the town they haven't seen in a decade, to face her own demons and see what answers, if any, she can find.

A deeply moving, gripping debut, this is a novel about the secrets we carry, and the bonds between twins.